Abstract: A pipeline trench system may include a vault and a bore pit in select flow communication therewith for substantially containing fluid spilled from a pipeline disposed therein. An above-ground containment system may also be provided with or without an underlying bore pit. The vault may include side walls and a lower barrier, sealed together, with an upper barrier positioned thereover. The vault may be filled with bedding, backfill, and a pipeline running therethrough. The bore pit includes similar features to that of the vault with the exception that the bore pit is larger than the vault permitting the flow of released leakage to be contained therein. The above-ground containment system includes berms and diked areas for directing and/or containing select liquid flow.